No extrusions whatsoever. All of the MLP was done in GMAX, not AC3D, as GMAX has better control of bends than AC3D through its "Bend" modifier. I have since managed to reduce the overall MLP triangle count by ~40% and it still looks good.

I feel I have to point out that my "crusaide" isn't against detail (if it is correct and not super-duper expensive), but instead against faces/vertices that are not visible, so if removed the visual does not change. That is 100% free performance.

Meanwhile in the "guidance land" I'm now working the TAEM guidance... but the FCS is a royal PITA...

So I noticed that the vertical velocity as returned by GetGroundspeedVector(FRAME_HORIZON) is subject to the terrain the vehicle is flying over, so when flying over rugged terrain it jumps quite a bit. (Let's call this "relative velocity", VR.)
If I get the vertical component (stright to the center of the Earth) of the velocity of the vehicle in relation to the center of the Earth (and this would be "inertial velocity", VI), could I use it to "replace" the vertical component returned by GetGroundspeedVector?

I think the rotation of the Earth doesn't "contaminate" the vertical component of VI, so that should be "pure", and in VR, the horizontal components should not be affected by the terrain below, so it seems a fair match...
... or is there a more direct/better/correct way to get a "clean" vertical velocity?

x,y,z and dx/dt,dy/dt,dz/dt are of course components of position and velocity vectors relative to the Earth. This should be possible to get using the VESSEL::GetRelativePos() and VESSEL::GetRelativeVel() methods.

So, yesterday I managed to get the vehicle to fly a TAEM all the way to the runway... ...the prefinal turn was SCARY (for some reason they placed the roll limit at 100º, so it is not shy of banking if it needs ), but it got to the A/L interface perfectly and from then on it was all tested.
And so now comes the usual issue of the missing data: I'm missing some I-LOADs to calculate the altitude reference... some can be calculated from others, but I can't do magic. What I can do is make an "+/- educated guess" from what I know and from what is available... <- IMO, the most likely scenario
DaveS, do you have the ENT GUID 2102? That might have some juice to squeeze.

For the last couple days I have been trying to figure out why the GOX vents through MPS intermediate seal turbopump drain lines doesn't want to line up. I've checked everything. Everything seems to check out. Is there some logic I'm missing in the set up? The actual coordinates is with the nozzles in the installed NULL positions which I got directly from AC3D.